Analysis And Research Of Encryption Algorithm Based On Chaos Theory

It takes an important role on information security for the cryptogram technology based on chaos.Founded on the analysis and research to the existing chaos encryption algorithm,a chaos crypto-algorithm based on the feistel network architecture had been analyzed and cracked.Two new Frequency domain encryptions were proposed.First.a wavelet territory image encryption algorithm based on the two-dimensional cat mapping had been proposed,and in this method, chaos sequence was formed by two-dimensional cat mapping,and then discredited the sequence to encrypt the wavelet transformation coefficient.Second,a image encryption algorithm based on the chaos mapping and the score Fourier transformation had been proposed.This algorithm structured two-dimensional permutation network by the exponent mapping which has the chaos characteristic, and then recombination score Fourier transformation to encrypt images.In view of the shortcoming of the existing color image encryption methods,propose a new color stationary image encryption algorithm based on chaotic sequences ranking.